Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
060041goodexcellent71excellent
050036goodexcellent51excellent
040034goodexcellent61excellent
030030goodexcellent51excellent
020029goodexcellent41excellent
010023goodexcellent51excellent
000024goodexcellent51excellent
230019excellentexcellent41excellent
220017excellentexcellent31excellent
210016excellentexcellent21excellent
20008excellentexcellent11excellent
19003excellentexcellent11excellent
18003excellentexcellent11excellent
17003excellentexcellent11excellent
160017excellentexcellent11excellent
15001excellentexcellent11excellent
14002excellentexcellent11excellent
130028goodexcellent11excellent
12003excellentexcellent11excellent
11004excellentexcellent11excellent
10006excellentexcellent21excellent
090015excellentexcellent21excellent
080011excellentexcellent21excellent
070015excellentexcellent31excellent